新语言:机翻

语言模块升级
支持更自由地添加语言（不再使用语言序号）
给getTip设置metatable的代码移出模块

parts/scenes/manual.lua

@@ -2,7 +2,7 @@ local scene={}
 
 function scene.sceneInit()
     BG.set('cubes')
-    WIDGET.active.texts:setTexts(require("parts.language.manual_"..({'zh','zh','zh','en','en','en','en','en'})[SETTING.lang]))
+    WIDGET.active.texts:setTexts(require("parts.language.manual_"..({'zh','zh','zh','en','en','en','en','en'})[SETTING.locale]))
 end
 
 function scene.wheelMoved(_,y)